Oracle 10g 数据文件的第一个数据块结构
2015-01-22 10:49
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一.数据文件的第一个数据块结构kcvfh
BBED> set file 1 FILE# 1 BBED> set block 1 BLOCK# 1 --查看第一个数据块的整体结构 BBED> map /v File: /u01/app/oracle/oradata/ORCL/datafile/o1_mf_system_bc7ld3sf_.dbf (1) Block: 1 Dba:0x00400001 ------------------------------------------------------------ Data File Header struct kcvfh, 676 bytes @0 struct kcvfhbfh, 20 bytes @0 struct kcvfhhdr, 76 bytes @20 ub4 kcvfhrdb @96 struct kcvfhcrs, 8 bytes @100 ub4 kcvfhcrt @108 ub4 kcvfhrlc @112 struct kcvfhrls, 8 bytes @116 ub4 kcvfhbti @124 struct kcvfhbsc, 8 bytes @128 ub2 kcvfhbth @136 ub2 kcvfhsta @138 struct kcvfhckp, 36 bytes @484 ub4 kcvfhcpc @140 ub4 kcvfhrts @144 ub4 kcvfhccc @148 struct kcvfhbcp, 36 bytes @152 ub4 kcvfhbhz @312 struct kcvfhxcd, 16 bytes @316 word kcvfhtsn @332 ub2 kcvfhtln @336 text kcvfhtnm[30] @338 ub4 kcvfhrfn @368 struct kcvfhrfs, 8 bytes @372 ub4 kcvfhrft @380 struct kcvfhafs, 8 bytes @384 ub4 kcvfhbbc @392 ub4 kcvfhncb @396 ub4 kcvfhmcb @400 ub4 kcvfhlcb @404 ub4 kcvfhbcs @408 ub2 kcvfhofb @412 ub2 kcvfhnfb @414 ub4 kcvfhprc @416 struct kcvfhprs, 8 bytes @420 struct kcvfhprfs, 8 bytes @428 ub4 kcvfhtrt @444 ub4 tailchk @8188 BBED>
--print结构 kcvfh BBED> print kcvfh struct kcvfh, 676 bytes @0 struct kcvfhbfh, 20 bytes @0 ub1 type_kcbh @0 0x0b ub1 frmt_kcbh @1 0xa2 ub1 spare1_kcbh @2 0x00 ub1 spare2_kcbh @3 0x00 ub4 rdba_kcbh @4 0x00400001 ub4 bas_kcbh @8 0x00000000 ub2 wrp_kcbh @12 0x0000 ub1 seq_kcbh @14 0x01 ub1 flg_kcbh @15 0x04 (KCBHFCKV) ub2 chkval_kcbh @16 0xd5f6 ub2 spare3_kcbh @18 0x0000 struct kcvfhhdr, 76 bytes @20 ub4 kccfhswv @20 0x00000000 ub4 kccfhcvn @24 0x0a200100 ub4 kccfhdbi @28 0x533ddaa4 text kccfhdbn[0] @32 O text kccfhdbn[1] @33 R text kccfhdbn[2] @34 C text kccfhdbn[3] @35 L text kccfhdbn[4] @36 text kccfhdbn[5] @37 text kccfhdbn[6] @38 text kccfhdbn[7] @39 ub4 kccfhcsq @40 0x0000022d ub4 kccfhfsz @44 0x0000f000 s_blkz kccfhbsz @48 0x00 ub2 kccfhfno @52 0x0001 ub2 kccfhtyp @54 0x0003 ub4 kccfhacid @56 0x00000000 ub4 kccfhcks @60 0x00000000 text kccfhtag[0] @64 text kccfhtag[1] @65 text kccfhtag[2] @66 text kccfhtag[3] @67 text kccfhtag[4] @68 text kccfhtag[5] @69 text kccfhtag[6] @70 text kccfhtag[7] @71 text kccfhtag[8] @72 text kccfhtag[9] @73 text kccfhtag[10] @74 text kccfhtag[11] @75 text kccfhtag[12] @76 text kccfhtag[13] @77 text kccfhtag[14] @78 text kccfhtag[15] @79 text kccfhtag[16] @80 text kccfhtag[17] @81 text kccfhtag[18] @82 text kccfhtag[19] @83 text kccfhtag[20] @84 text kccfhtag[21] @85 text kccfhtag[22] @86 text kccfhtag[23] @87 text kccfhtag[24] @88 text kccfhtag[25] @89 text kccfhtag[26] @90 text kccfhtag[27] @91 text kccfhtag[28] @92 text kccfhtag[29] @93 text kccfhtag[30] @94 text kccfhtag[31] @95 ub4 kcvfhrdb @96 0x00400179 struct kcvfhcrs, 8 bytes @100 ub4 kscnbas @100 0x00000005 ub2 kscnwrp @104 0x0000 ub4 kcvfhcrt @108 0x33c88f35 ub4 kcvfhrlc @112 0x33cecf37 struct kcvfhrls, 8 bytes @116 ub4 kscnbas @116 0x00073e32 ub2 kscnwrp @120 0x0000 ub4 kcvfhbti @124 0x00000000 struct kcvfhbsc, 8 bytes @128 ub4 kscnbas @128 0x00000000 ub2 kscnwrp @132 0x0000 ub2 kcvfhbth @136 0x0000 ub2 kcvfhsta @138 0x2004 (KCVFHOFZ) struct kcvfhckp, 36 bytes @484 struct kcvcpscn, 8 bytes @484 ub4 kscnbas @484 0x00073e33 ub2 kscnwrp @488 0x0000 ub4 kcvcptim @492 0x33cecf3e ub2 kcvcpthr @496 0x0001 union u, 12 bytes @500 struct kcvcprba, 12 bytes @500 ub4 kcrbaseq @500 0x00000001 ub4 kcrbabno @504 0x00000002 ub2 kcrbabof @508 0x0010 ub1 kcvcpetb[0] @512 0x02 ub1 kcvcpetb[1] @513 0x00 ub1 kcvcpetb[2] @514 0x00 ub1 kcvcpetb[3] @515 0x00 ub1 kcvcpetb[4] @516 0x00 ub1 kcvcpetb[5] @517 0x00 ub1 kcvcpetb[6] @518 0x00 ub1 kcvcpetb[7] @519 0x00 ub4 kcvfhcpc @140 0x00000043 ub4 kcvfhrts @144 0x33cecf1e ub4 kcvfhccc @148 0x00000042 struct kcvfhbcp, 36 bytes @152 struct kcvcpscn, 8 bytes @152 ub4 kscnbas @152 0x00000000 ub2 kscnwrp @156 0x0000 ub4 kcvcptim @160 0x00000000 ub2 kcvcpthr @164 0x0000 union u, 12 bytes @168 struct kcvcprba, 12 bytes @168 ub4 kcrbaseq @168 0x00000000 ub4 kcrbabno @172 0x00000000 ub2 kcrbabof @176 0x0000 ub1 kcvcpetb[0] @180 0x00 ub1 kcvcpetb[1] @181 0x00 ub1 kcvcpetb[2] @182 0x00 ub1 kcvcpetb[3] @183 0x00 ub1 kcvcpetb[4] @184 0x00 ub1 kcvcpetb[5] @185 0x00 ub1 kcvcpetb[6] @186 0x00 ub1 kcvcpetb[7] @187 0x00 ub4 kcvfhbhz @312 0x00000000 struct kcvfhxcd, 16 bytes @316 ub4 space_kcvmxcd[0] @316 0x00000000 ub4 space_kcvmxcd[1] @320 0x00000000 ub4 space_kcvmxcd[2] @324 0x00000000 ub4 space_kcvmxcd[3] @328 0x00000000 word kcvfhtsn @332 0 ub2 kcvfhtln @336 0x0006 text kcvfhtnm[0] @338 S text kcvfhtnm[1] @339 Y text kcvfhtnm[2] @340 S text kcvfhtnm[3] @341 T text kcvfhtnm[4] @342 E text kcvfhtnm[5] @343 M text kcvfhtnm[6] @344 text kcvfhtnm[7] @345 text kcvfhtnm[8] @346 text kcvfhtnm[9] @347 text kcvfhtnm[10] @348 text kcvfhtnm[11] @349 text kcvfhtnm[12] @350 text kcvfhtnm[13] @351 text kcvfhtnm[14] @352 text kcvfhtnm[15] @353 text kcvfhtnm[16] @354 text kcvfhtnm[17] @355 text kcvfhtnm[18] @356 text kcvfhtnm[19] @357 text kcvfhtnm[20] @358 text kcvfhtnm[21] @359 text kcvfhtnm[22] @360 text kcvfhtnm[23] @361 text kcvfhtnm[24] @362 text kcvfhtnm[25] @363 text kcvfhtnm[26] @364 text kcvfhtnm[27] @365 text kcvfhtnm[28] @366 text kcvfhtnm[29] @367 ub4 kcvfhrfn @368 0x00000001 struct kcvfhrfs, 8 bytes @372 ub4 kscnbas @372 0x00000000 ub2 kscnwrp @376 0x0000 ub4 kcvfhrft @380 0x00000000 struct kcvfhafs, 8 bytes @384 ub4 kscnbas @384 0x00000000 ub2 kscnwrp @388 0x0000 ub4 kcvfhbbc @392 0x00000000 ub4 kcvfhncb @396 0x00000000 ub4 kcvfhmcb @400 0x00000000 ub4 kcvfhlcb @404 0x00000000 ub4 kcvfhbcs @408 0x00000000 ub2 kcvfhofb @412 0x000a ub2 kcvfhnfb @414 0x000a ub4 kcvfhprc @416 0x33ce5d9c struct kcvfhprs, 8 bytes @420 ub4 kscnbas @420 0x0006ca36 ub2 kscnwrp @424 0x0000 struct kcvfhprfs, 8 bytes @428 ub4 kscnbas @428 0x00000000 ub2 kscnwrp @432 0x0000 ub4 kcvfhtrt @444 0x00000000 BBED>
注，print出的值可能是不完整的，如果想查看详细的值，最好用dump
二.数据字典X$KCVFH
X$KCVFH（参考dbsnake博客）的值与kcvfh是相对应的
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